Sheet-adjuster for printing-presses



(No Model.)

L. L. LOMER.

SHEET ADJUSTEE EOE PRINTING PRESSES. No. 438,585. Patented Oct. 14, 11890.

UNITED STATES PATENT OFFICE.

LOUIS L. LOMER, OF HARRODSBURG, KENTUCKY.

SHEET-ADJUSTER FOR PRINTING-PRESSES.

SPECIFICATION forming part of Letters Patent No. 438,585, dated October 14, 1890.

Application filed November 14, 1888. Renewed August 9, 1890. Serial No. 361,538. (No model.)

To a/ZZ whom it may concern.-

Be it known that I, LOUIS L; LOMER, a resident of Harrodsburg, in the county of Mercer and State of Kentucky, have invented certain new and useful Improvements in Sheet-Adjusters for Printing-Presses; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in sheet-adjusters for printing-presses, the object being to provide a simple means whereby each sheet may be brought exactly into position during the interval between its delivery and the delivery of the next succeeding sheet.

In the accompanying drawings, to which this specification refers, Figure 1 shows the apparatus in plan. Fig. 2 shows the same apparatus seen from below. Fig. 3 is a section on the line uo w, Fig. 1. Fig. 4 is a detail View hereinafter explained.

In the iigures,A is a plate or table to be supported in any suitable manner in position to receive the sheets as they are delivered from the press.

B B are four bent bars sliding in grooves cut in the plate A at right angles to each other. Both the outer and inner ends of these bars are straight, and the former slide in grooves in the upper surface, while the inner ends slide in grooves in its lower surface, the plate being cut through to permit the movement of the bend or portion connecting the two. The inner ends rest at all times against the edge of a ratchet-like disk C, which oscillates upon a vertical pivot D at the middle of the plate A, and are supported by a flange E, projecting on all sides at the lower edge of the disk. Each bar is at all times pressed inward against the disk bya spring F, coiled about its inner portion to act against a flange G thereon and react against an offset or shoulder H inthe side of the groove in which it lies. From the flange E projects an arm I, to

which are attached upon opposite sides a spring .I and a cord K or its equivalent, the former being connected to a fixed support upon the plate and the latter to any suitablymoving part of the press-as for example, the press-fly. The outer end of each lever has along its upper side a T-shaped tongue L, engaged by a sliding saddle M, formed integrally with a plate N, for pushing the edge of the paper into exact position. The saddle being of considerable length holds the plate very precisely perpendicular to the bar, and thus the four plates at all times form parts of the four sides of a rectangle which may at will be varied in either dimension by sliding the saddles upon the bars respectively-that is to say, the plates may be so adjusted that when at their inner limits they just meet the four edges of any rectangular sheet. When so adjusted, they may be locked in position by a set-screw O, working in each saddle against the corresponding tongue L. Now, the ends of the four levers being at their innermost limits, as shown in the drawings, and held in contact with the edge of the ratchetdisk C by the springs F, it is plain that the plates N will be simultaneously forced outward to the same distance by drawing the cord K outward, for the spring J yields, allowing the arm I, with the integrally-formed disk C, to rotate about the central pivot D, and the bars and connected plates are pressed outward by the cam-like action of the diskedges upon the bars. When the force acting upon the cord is removed, the spring .T returns the arm I and disk Oto the original position, and the bars under the action of the springs F bring the plates also to their inner limits of motion. If the cord be so attached to moving parts of the press that it will be drawn out as the press-fly descends and released as it rises, the sheet will be delivered by the fly within the plates when they are most widely separated, and will be perfectly adjusted in position by the returning-plates which strike its four sides simultaneously and near the middle where they are least liable to be injured by displacement or distortion of their edges.

What I claim isv The combination, with the board A, having in its upper andlowerfaees the radial grooves speotively, substantially as and for the pur oonnectedrbyzpassages through theboard, of pose set forth.

the bent bars B, lying in said grooves, the In testimony whereof Ihzwe signed this ratchet-like disk C, pivoted in the plane of specification in the presence of two subscrib- 5 the inner ends of said bars, the springs coiled ing Witnesses.

about the inner ends of the bars and pressin@ them respectively against `the omni-faces fo? LOUIS "L' LOMER' the disk, the oord K and spring J for oscil- Witnesses:

lating the disk, andthe platesM, adjustably` R. J. MILLER,

ro secured to the outer ends of said `bars re-t RAL. BARNETT. 

